Replacement Alloy or Steel HG and HGR Freehub Bodies, with Anti-Bite technology, for all HEX Rear Hubs. Choose alloy version for non E-Bike use or steel version for E-Bike or HD use. . HEX Rear Hub HG Alloy Anti-Bite Freehub. Replacement Alloy HG Freehub Body, with Anti-Bite technology, for all HEX Rear Hubs. Compatible with:. All HEX J-Type, Straightpull, and Gravel rear wheels . Not compatible with SPIKE/OOZY/SPOON hubs. Alloy not for use with E-Bikes - use steel version HEX Rear Hub HG Steel Freehub. Replacement Steel HG Freehub Body for all HEX Rear Hubs and E-Bike or HD use. Compatible with:. All HEX J-Type, Straightpull, and Gravel rear wheels. Recommended for E-Bikes or Heavy Duty Use. Not compatible with SPIKE/OOZY/SPOON hubs. HEX Rear Hub HGR Alloy Anti-Bite Freehub & Spacer Ring. Replacement Alloy HGR (HG-Road) Freehub Body, with Anti-Bite Technology, for all HEX Rear Hubs. Includes 1.8mm spacer ring to also allow the use of MTB cassettes. Compatible with:. All HEX J-Type, Straightpull, and Gravel rear wheels. Not compatible with SPIKE/OOZY/SPOON hubs. .HEX Rear Hub HGR Alloy Anti-Bite Freehub (Road/Gravel/MTB)